<template>
    <div class="dashboard">
        <el-row :gutter="20">
            <el-col :span="8">
                <el-card shadow="hover" class="mgb20" style="height:252px;">
                    <div class="user-info">
                        <img src="~assets/img/img.jpg" class="user-avator">
                        <div class="user-info-cont">
                            <div class="user-info-name">{{name}}</div>
                            <div>{{role}}</div>
                        </div>
                    </div>
                    <div class="user-info-list">
                        上次登录时间：
                        <span>{{time}}</span>
                    </div>
                    <div class="user-info-list">
                        上次登录地点：
                        <span>{{location}}</span>
                    </div>
                </el-card>
                <el-card shadow="hover" style="height: 252px;">
                    <div class="clearfix" slot="header">
                        <span>语言详情</span>
                    </div>
                    Vue
                    <el-progress :percentage="vueSkill" color="#42b983"></el-progress>JS
                    <el-progress :percentage="jsSkill" color="#f1e05a"></el-progress>CSS
                    <el-progress :percentage="cssSkill"></el-progress>HTML
                    <el-progress :percentage="htmlSkill" color="#f56c6c"></el-progress>
                </el-card>
            </el-col>
            <el-col :span="16">
                <el-row :gutter="20" class="mag20">
                    <el-col :span="8">
                        <el-card shadow="hover" :body-style="{'padding': '0px'}"></el-card>
                        <div class="grid-content grid-con-1">
                            <i class="el-icon-user grid-con-icon"></i>
                            <div class="grid-cont-right">
                                <div class="grid-num">1234</div>
                                <div>用户访问量</div>
                            </div>
                        </div>
                    </el-col>
                    <el-col :span="8">
                        <el-card shadow="hover" :body-style="{'padding': '0px'}">
                            <div class="grid-content grid-con-2">
                                <i class="el-icon-bell grid-con-icon"></i>
                                <div class="grid-cont-right">
                                    <div class="grid-num">321</div>
                                    <div>系统消息</div>
                                </div>
                            </div>
                        </el-card>
                    </el-col>
                    <el-col :span="8">
                        <el-card shadow="hover" :body-style="{'padding': '0px'}">
                            <div class="grid-content grid-con-3">
                                <i class="el-icon-goods grid-con-icon"></i>
                                <div class="grid-cont-right">
                                    <div class="grid-num">5000</div>
                                    <div>数量</div>
                                </div>
                            </div>
                        </el-card>
                    </el-col>
                </el-row>
                <el-card shadow="hover" style="height: 403px;">
                    <div slot="header" class="clearfix">
                        <span>待办事项</span>
                        <el-button style="float: right; padding: 3px 0;" type="text">添加</el-button>
                    </div>
                    <el-table :show-header="false" :data="todoList" style="width: 100%;">
                        <el-table-column width="40">
                            <template slot-scope="scope">
                                <el-checkbox v-model="scope.row.status"></el-checkbox>
                            </template>
                        </el-table-column>
                        <el-table-column>
                            <template slot-scope="scope">
                                <div class="todo-item" :class="{'todo-item-del': scope.row.status}">
                                    {{scope.row.title}}
                                </div>
                            </template>
                        </el-table-column>
                        <el-table-column width="60">
                            <template>
                                <i class="el-icon-edit"></i>
                                <i class="el-icon-delete"></i>
                            </template>
                        </el-table-column>
                    </el-table>
                </el-card>
            </el-col>
        </el-row>
        <el-row :gutter="20">
            <el-col :span="12">
                <el-card shadow="hover">
                    <!-- vue-schart画图表 -->
                    <schart ref="bar" class="schart" canvasId="bar" :options="options"></schart>
                </el-card>
            </el-col>
            <el-col :span="12">
                <el-card shadow="hover">
                    <schart ref="line" class="schart" canvasId="line" :options="options2"></schart>
                </el-card>
            </el-col>
        </el-row>
    </div>
</template>

<script>
    import Schart from 'vue-schart';
    import bus from 'utils/bus.js'
    export default {
        name : 'Dashboard',
        components: {
            Schart  
        },
        data () {
            return {
                name: localStorage.getItem('ms_username'),
                time: localStorage.getItem('preTime'),
                vueSkill: 71.3,
                jsSkill: 24.1,
                htmlSkill: 5.9,
                cssSkill: 13.7,
                todoList: [
                {
                    title: '今天要修复100个bug',
                    status: false
                },
                {
                    title: '今天要修复100个bug',
                    status: false
                },
                {
                    title: '今天要写100行代码加几个bug吧',
                    status: false
                },
                {
                    title: '今天要修复100个bug',
                    status: false
                },
                {
                    title: '今天要修复100个bug',
                    status: true
                },
                {
                    title: '今天要写100行代码加几个bug吧',
                    status: true
                }
                ],
                options: {
                    type: 'bar',
                    title: {
                        text: '最近一周各品类销售图'
                    },
                    xRorate: 25,
                    labels: ['周一', '周二', '周三', '周四', '周五'], // 横坐标
                    datasets: [
                        {
                            label: '家电',
                            data: [234, 278, 270, 190, 230]
                        },
                        {
                            label: '百货',
                            data: [164, 178, 190, 135, 160]
                        },
                        {
                            label: '食品',
                            data: [144, 198, 150, 235, 120]
                        }
                    ]
                },
                options2: {
                    type: 'line',
                    title: {
                        text: '最近几个月各品类销售趋势图'
                    },
                    labels: ['6月', '7月', '8月', '9月', '10月'],
                    datasets: [
                        {
                            label: '家电', // 标记
                            data: [234, 278, 270, 190, 230]
                        },
                        {
                            label: '百货',
                            data: [164, 178, 150, 135, 160]
                        },
                        {
                            label: '食品',
                            data: [74, 118, 200, 235, 90]
                        }
                    ]
                }
            }
        },
        computed: {
            role() {
                return this.name == "admin" ? '超级管理员' : '普通用户';
            },
            location() {
                return sessionStorage.getItem('location')  || '重庆'
            }
        },
        created () {
            // this.$refs.bar 这里获取不到
            this.handleListener();
        },
        activated () {
          this.handleListener();  
        },
        deactivated () {
            window.removeEventListener('resize', this.renderChart);
            bus.$off('collapse', this.handleBus);
        },
        methods: {
            // 主要是针对页面大小发生改变后，图表重绘
            handleListener() {
                bus.$on('collapse', this.handleBus);
                // 调用renderChart方法对图表进行重新渲染
                window.addEventListener('resize', this.renderChart);
            },
            handleBus(msg) {
                setTimeout(()=>{
                    this.renderChart();
                }, 200)
            },
            renderChart() {
                this.$refs.bar.renderChart();
                this.$refs.line.renderChart();
            }
        }
    }
</script>

<style scoped>
    .el-row {
        margin-bottom: 20px;
    }
    
    .user-info {
        display: flex;
        align-items: center;
        padding-bottom: 20px;
        border-bottom: 2px solid #ccc;
        margin-bottom: 20px;
    }

    .user-avator {
        width: 120px;
        height: 120px;
        border-radius: 50%;
    }

    .user-info-cont {
        padding-left: 50px;
        flex: 1;
        font-size: 14px;
        color: #999;
    }

    .user-info-cont div:first-child {
        font-size: 30px;
        color: #222;
    }

    .user-info-list {
        font-size: 14px;
        color: #999;
        line-height: 25px;
    }

    .user-info-list span {
        margin-left: 70px;
    }

    .mgb20 {
        margin-bottom: 20px;
    }

    .grid-content {
        display: flex;
        align-items: center;
        height: 100px;
    }

    .grid-cont-right{
        flex: 1;
        text-align: center;
        font-size: 14px;
        color: #999;
    }

    .grid-num {
        font-size: 30px;
        font-weight: bold;
    }

    .grid-con-icon {
        font-size: 50px;
        width: 100px;
        height: 100px;
        text-align: center;
        line-height: 100px;
        color: #fff;
    }

    .grid-con-1 .grid-con-icon {
        background: rgb(45, 140, 240);
    }

    .grid-con-1 .grid-num {
        color: rgb(45, 140, 240);
    }

    .grid-con-2 .grid-con-icon {
        background: rgb(100, 213, 114);
    }

    .grid-con-2 .grid-num {
        color: rgb(45, 140, 240);
    }

    .grid-con-3 .grid-con-icon {
        background: rgb(242, 94, 67);
    }

    .grid-con-3 .grid-num {
        color: rgb(242, 94, 67);
    }

    .todo-item {
        font-size: 14px;
    }

    .todo-item-del {
        text-decoration: line-through;
        color: #999;
    }

    .schart {
        width: 100%;
        height: 300px;
    }
</style>

<!-- 
    注意点
    使用<template slot-scope="scope"> {{scope.row}} </template> 可以获取数组中每一条数据（和:data配合使用） 相当于vue中的for
    有点像vue中的插槽属性列中数据需要在外面重新展示 <template slot="msg">{{msg.a}}</template>   <slot a="123" b="456"></slot>
-->